WO2015118143A1 - Drag chain and monitoring system for protecting against line breaks - Google Patents

Abstract

The invention relates to a drag chain (12) having additional protection against line breaks. The drag chain comprises links (20) or segments for guiding one or more lines, such as cables, hoses, or the like, wherein the links or segments can be pivoted in relation to each other in order to form a deflecting curve (28). The protective equipment comprises a detector, which is provided for monitoring the drag chain. The detector (16) is mechanically operatively connected to a low-elongation triggering string (30) and has a sensor (36) for sensing a kinematic parameter of the triggering string (30). A break (13) in the drag chain (12) can be detected in good time by means of the change of the kinematic parameter. Thus, guided cables, hoses, or the like can be protected against line breaks.

Description

 Energy supply chain and monitoring system for protection against

 line break

The invention relates generally to energy guiding chains of a plurality of interconnected members or segments for guiding one or more conduits between a base and a relative to the base movable

Takeaway. The members or segments are angled against each other to form a deflection arc. To design an energy chain many possibilities are known. The energy guiding chain may e.g. be composed of individual chain links. An energy chain in the

Present sense can also be made in sections over several bendable segments in one piece or completely in one piece. Thus, the invention is not only applicable to real link chains, but equally applicable to cable guides, which are made completely in one piece in the longitudinal direction.

Cable drag chains, in particular those which are incompletely protected against external influences, can be damaged, e.g. through a blocking

 Foreign body. This can lead to a partial or complete break. Even with protected

Energy guiding chains may be, e.g. by excessive

Wear, excessive temperatures or others Boundary conditions outside of a target range, to a

Failure in the energy chain come.

In the worst case, a break will result in a break in one or more of the routed lines. The invention therefore particularly relates to a

 Energy supply chain, which is designed to protect against a demolition of the guided line or lines, and a corresponding monitoring system (Engl, "monitoring system") .The energy supply chain for this purpose includes a detector, such as sensor, sensor or the like

 Monitoring whether the energy supply chain is functional. The monitoring system includes at least one

Evaluation unit, which with the detector at the

Energy supply chain is connected. Cable drag chains with monitoring system and sensors are from international patent applications

WO 2004/090375 AI or WO 2013/156607 AI known. These systems are based on the approach of force measurement. They protect the chain itself from breakage if the applied tensile or compressive forces outside the

 Setpoint range. These approaches are reliable, but require relatively expensive measurement technology for

Force measurement. In addition, the force sensors can only be scaled to a limited extent or the permissible setpoint ranges of the forces can usually be set for specific applications.

Another monitoring system for protection against

Line break is known from international patent application WO 2009/095470 AI. Here, the driver is so releasably connected via a coupling with the energy chain, that when exceeding a force limit, an automatic release takes place and an emergency stop is initiated. The excess can be determined by force measurement be, with the above disadvantages apply accordingly. Alternatively, there is also proposed a type of predetermined breaking point, which, however, can only be adapted to different applications in practice with difficulty. In both cases, it will often come in practice to false triggering or an unnecessary emergency stop, as a

Excessive force is not necessarily accompanied by a break. In addition, the system should apparently have a reserve guide unit to compensate for the inertia-related braking distance.

The patent JP 2009 052 714 A or the patent

JP 4847935 B2 describe an electro-optical

Breakage detection system for energy supply chains. For this purpose, an optical fiber cable or a

Guide light guide along the chain outside the tabs. A detector detects the amount of light that the light pipe carries, and a detection device detects a break in the energy chain when the

Light quantity falls below a predetermined threshold. This solution is especially suitable for fracture detection. However, it is quite expensive and can be used in the event of self-failure of the typically sensitive light guide, e.g. by

Aging or external effects, lead to false tripping.

Based on the above prior art, it is therefore an object of the present invention, a solution that is easy to implement for many applications

to propose, with which a line break in one

Energy supply chain can be avoided. At the same time, the probability of false breakage detection or the false triggering rate should also be reduced. In addition, the solution should be as robust and durable as possible.

This object is achieved by a power supply chain according to claim 1 or a monitoring system according to claim 16 and a Use according to claim 20.

The energy guiding chain according to the invention is characterized in that the detector has a low-expansion

Triggering cord (Engl. "Triggering cord") for detecting an actual fracture or failure in the

 Energy supply chain is operatively connected. In this case, the triggering cord of the energy guiding chain is preferably guided substantially at the level of the neutral fiber. The neutral fiber, also called the zero line, is the layer of the cross-section of the energy guiding chain, the length of which does not change during bending or during the movement of the deflection arc. If the trigger cord is positioned correctly, the breakage detection becomes more precise and easier. Preferably, the energy guiding chain guides the tripping cord at regular intervals and at least over a length corresponding to the region over which the deflecting arc is due to the

Driver movement moves. As trigger cord is each

cord-like line or connection suitable, which can interact mechanically with a detector. When

In particular, each release cord is considered to be low in strain, the inherent elongation of which is nominally lower than the maximum permissible tensile force during operation at the driver, than the elongation of the energy carrier chain itself (including play of the articulated connections). In the solution according to the invention, the detector has a

Transducer for detecting a kinematic parameter and the triggering cord acts mechanically with the transducer

together. This will be a particularly simple and robust

Construction achieved. The tripping cord is permanently flexible, in particular limp. As a suitable low-stretch, especially in mechanical action principle, a release cord proved their elongation, (technical elongation), at work load, ie at a nominal tensile load corresponding to normal operation (not at break), <3%, preferably <1%, based on the original length. Preferably, the elongation remains linear even with a double workload

Elasticity area.

The invention thus does not start from a maximum permissible force on the driver, in which an emergency stop should take place, but detected by the triggering cord one

actual breakage of the chain. Thus, the

Spurious trip rate (Engl) is significantly reduced, i.e. unnecessary failures are avoided The interaction according to the invention with a break detection trigger cord also makes it possible to use a

simpler and / or less expensive designed detector. The same applies to the evaluation unit.

The monitoring by means of a tripping cord is in comparison to the previously known force measuring principle also more independent of the application, e.g. the length-related weight or the frictional forces to be overcome during operation. Another

Advantage of the invention is therefore that the

 Acquisition principle over wide ranges of chain lengths, i. unchanged for many applications.

A particularly simple detector can be used if the release cord is arranged in the manner of a pull rope. In an expedient embodiment of this type, the detector comprises at least one sensor for travel,

Speed and / or acceleration detection, i. for measuring plug, speed, acceleration or a combination thereof as possible kinematic parameters. The detector may e.g. a pickup with a

Have flip-flop for generating an output signal. The sensor can also be part of a real measuring device, eg a sensor, measuring sensor or the like. be. As a pickup is in principle, any device that responds to a change in the state of the tripping line in the event of a break suitable.

In particular, a corresponding triggering cord with a corresponding pickup can be provided on each chain side. With two tripping strings, a partial failure, e.g. can be detected in just one strap section. Redundancy can also reduce the false-trigger rate.

In a cost-effective design for bilateral

Surveillance is a continuous triggering cord along one tab and led back along the other. The triggering cord is hereby deflected at a chain end, e.g. via a rotatably mounted deflection. The deflection, in particular the axis of rotation, can thus be operatively connected to only one detector to an asymmetric

Detecting deflection. Such an asymmetry or a

Rotation or displacement in the deflection compared to normal operation indicates a break in one of the two lashing strands. In practice this represents the typical course of a failure, i. one

simultaneous breakage of both straps is extremely rare.

But it is also conceivable, on each page its own

Provide a tripping cord or only one tripping cord on one side only. The trigger cord then has a total length approximately equal to the length of the energy chain and at least less than 1.5 times the length of the

Energy supply chain.

In a simple two-sided monitoring design, especially if redundancy is not desired, a single detector for two separate tripping cords or the two sections of a deflected continuous tripping cord can be provided. Regardless of the type of detector, this can be at the fixed end or at the movable end of the detector Energy supply chain can be provided.

For example, a conventional transducer may be used in the design of a pull switch for a safety cable or for a rope pull safety switch, Other cost-effective sensors, in particular for detecting abrupt parameter changes, are also used

suitable, e.g. a rocker switch, a linear position sensor or displacement sensor, incremental encoder, vibration sensor, acceleration sensor, etc. They usually allow one

Set threshold for a signal level change between two states in the event of a break.

An actual measurement of the position, speed and / or acceleration at the receiving end of the triggering cord is also within the scope of the invention. Preferably, the susceptor should have a tolerance against changes that are slow in time, e.g. Temperature expansion, and a reliable detection by the tripping circuit suddenly generated

Ensure changes in position. The latter can be facilitated by detecting speed or possibly acceleration.

In mechanical measuring principle, it is advantageous if separately provided or integrated cable guides or eyelets are provided on the energy chain, which the

Guide the release cord freely in the longitudinal direction.

As a result, a relative movement of the tripping cord in the event of a break in the energy guiding chain can be detected by the detector in a simple manner. At the same time, eyelets can ensure the predefined position of the release cord, in particular at the level of the neutral fiber. To delay the transmission of movement of the triggering cord on the transducer as delay and loss

to perform, the tripping cord is not only technical low expansion, but preferably held under suitable bias. A preferred mechanical embodiment therefore provides that the detector is at one end of the chain

is provided and the release cord is mounted there under bias, e.g. fastened with one end of the string to the pick-up and the other end of the string at the end of the longitudinal area to be monitored. The end of the monitored

Longitudinal region is preferably at the other end of the chain or on the driver, where the corresponding end of the cord is attached. The monitored area may alternatively only extend over part of the length of the energy guiding chain. It could e.g. From each side, capture a tripping cord just over half the total length.

The bias may e.g. a suitable preloaded

Spiral spring or a combination of pulley and

Achieve tension weight. In the case of a fixed base, the detector is expediently arranged on this, whereby a corresponding additional line in the energy guide is avoided. However, a reverse arrangement is within the scope of the invention. An advantage of the invention lies in the fact that a suitable bias depends only to a very small extent on the application and does not need to be adapted exactly to the total length of the energy supply chain with sufficiently low-strain tripping cord. To avoid false tripping solely by bending it is advantageous in a zugseilartig acting release cord when the eyelets at regular intervals

are arranged, in particular at intervals which in

Viewed longitudinally ^ 50%, preferably ^ 33%, amounting to over 180 ° radians of the deflection arc extending length of the energy chain.

In a particularly preferred embodiment is at each Link or at each segment a guide eye for the

Trigger cord provided. Thus, tensile force changes can be reduced by relative movement of the cord in the deflection arc.

Conveniently, the loops are carried out so that they do gleitführungsartig, ^¬ over at least a portion of the member or segment length extending in the longitudinal direction, and

Cross game are executed. To minimize wear of the triggering cord, the eyelets on both sides of mouths, which open curved or rounded in the longitudinal direction. The degree of curvature of the mouth is preferably adapted to the maximum bending of the members or segments. This reduces wear due to friction on the eyes themselves. The eyelets may also be used as purely punctual guidance, e.g.

torus-shaped. In the latter case, the course of the release cord in the deflection arc will correspond less to the course of the neutral fiber, but rather

approximate polygonal. A better approximation to the

neutral fiber in the deflection arc can be caused by larger

Longitudinal extension of the eyelets can be achieved. Alternatively, two eyelets may be provided in each member or segment, each close to the adjacent member or segment.

In a preferred embodiment, which allows the retrofitting of existing cable drag chains, the eyelet is integrated as part of a separate divider.

Dividers are often used to divide the interior of the

 Energy supply chain already available. Retrofitting can also take place with eyelets, which are used as separate attachments, in particular as injection-molded parts, for attachment to the limbs or segments, e.g. are carried out on the dividers or on side flaps. Also eyelets, which in the production already in the side flaps of

Energy supply chain are integrated, allow later to retrofit the tripping cord and the sensors. It is known to occur when switching between tensile and shear loads in most conventional

Energy drag chains by play of the joints related expansions or compressions, which in the

Evaluation or detection of transducer, detector and / or evaluation unit in the sense of tolerance

would be considered. This is especially true for long cable drag chains. To reduce this effect, it is expedient if the energy supply chain with a

Strain relief is equipped. A suitable partial strain relief has proposed the applicant in the international patent application WO 99/42743 AI. A

more complex strain relief is known from the published patent application DE 19752377 AI. In the case of a mechanical detection principle, the triggering cord is preferably produced as a cable or cable or as a single fiber, in particular of steel wire or of technical plastic. The initially mentioned low extensibility at workload is readily achievable with such ropes or cables. The tensile strength may be less than the tensile strength of the energy chain, as far as

it is ensured that they are suitable for cooperation with the detector, e.g. sufficient for a proposed spring tension. The triggering cord is independent of the operating principle flexible and durable resistant to constantly changing

Bending stress to choose.

It can be provided that the tripping cord also breaks in the event of a break in the chain itself. For this purpose, it can be provided that the tripping cord with less

Tensile strength is carried out, so that a break in the energy chain occurs in a breakage in the release cord. In this way, a break becomes one

Interruption detected by the detector. This allows, for example, a Flexible release with low tensile strength and preferably high yield ratio.

Regardless of the detection principle, it is as mentioned

advantageous if two tripping cords are provided.

Appropriately, a first trigger cord along a

 Provided outside and provided a second triggering cord along the opposite outer side, wherein

Preferably, for each page a corresponding sensor is connected to the respective triggering cord. Conventional designs are in particular those in which each member has two outer side flaps or parts, which are hingedly connected to adjacent side flaps or - parts, wherein the tab strands

typically connected by transverse webs. In addition to the special equipment of an energy guiding chain, the invention also relates to a monitoring system according to the preamble of claim 16 for the protection of a person

Energy supply chain against a line break.

This monitoring system is characterized by a

Energy supply chain according to one of the preceding embodiments, wherein the detector connected to the triggering cord is connected to the evaluation unit, and the evaluation unit detected by the detector signals with respect to a possible break in the

Energy supply chain evaluates.

Suitable designs of the evaluation unit are the

Professional accessible, in particular an adaptation of a

Evaluation unit similar to those from WO 2004/090375 AI or WO 2013/156607 AI, or an evaluation unit of the type PPDS basic, PPDS advanced or PPDS pro (available from igus GmbH, 51127 Cologne, Germany). The evaluation unit, the signal of the detector by an analog circuit, for example by means of a Schmitt trigger, or by a digital circuit with a computing unit, such as

Microprocessor, FPGA, PLC, etc., evaluate and serve

advantageous for signaling the accident to the

System control. The evaluation can already be done in the

Detector itself, which then transmits a processed signal to the evaluation unit.

Advantageously, the evaluation unit is designed so that it triggers an emergency stop of the driver when a break in the energy chain was detected on the triggering cord. When using a real measuring device or

Measuring device in or as a detector, e.g. a linear displacement sensor, an embodiment is expedient in which the evaluation unit detects a break when the measurement signal from the detector is outside of a tolerance field. For this purpose, for example, the o.g. Devices already suitable.

In addition to the energy chain and the associated

Monitoring system also relates to the invention

especially suitable for guiding the release cord suitable divider. This is inventively characterized in that the divider serving as a cable guide eyelet for extending in the longitudinal direction of the energy chain

Includes triggering cord. The eyelet can be made here as a separate attachment and attached to the divider, or be integrated into the divider. It is suitable for both cases e.g. a production by injection molding.

Finally, the invention also relates to the use of a detector and a low-strain tripping cord for

Detecting a break in an energy guiding chain according to claim 20. Here, the triggering cord is mechanically operatively connected to the detector and the detector detects a break in the energy guiding chain based on a

Change of a kinematic parameter in or on the Triggering.

For more details, advantages and features of the invention can be the following description of a

Embodiment reference to the accompanying drawings. Showing:

FIGS. 1A-1B: a monitoring system according to the invention and a power supply chain according to the invention in a schematic side view, in FIG

 functional state (FIG.1A) and a break in the energy supply chain (FIG.1B);

FIGS. 2A-2B: a schematic diagram of the output signal of a detector of the monitoring system, when operating in the functional state according to FIG. 1A and in the case of a break in the energy guiding chain according to FIG. 1B;

FIG. 3 shows a plan view of an invention. FIG

 equipped energy chain;

4 shows a longitudinal section along section line IV-IV in FIG

 FIG. 3, with a mechanically acting triggering cord, which is guided by eyelets;

FIG. 5 shows an example of a detector with which the

 Tripping cord from FIG. 4 interacts.

FIGS. 1A-1B show as a schematic diagram a monitoring system, generally designated 10, for monitoring the

Functioning of an energy guiding chain 12

(in the following: SFA 12). The monitoring system 10 comprises as main components: a specially adapted or equipped EFK 12, an evaluation unit 14 and a detector 16 arranged at the EFK 12. The detector 16 is connected to the evaluation unit 14 by signal technology. The Monitoring system 10 is used in particular to protect against an outline of the guided line (s) in the case of

Failure of the SFAO 12.

When the EFK 12 is partially or completely broken at a position, as exemplified at 13 in FIG. 1B

As a rule, it no longer fulfills its function. After a break EFK 12 can not ensure the protection of the unspecified (s) line (s), especially against kinking. To guide one or more lines, such as cables, hoses or the like. , the EFK 12 has a largely known structure. The EFK 12 consists e.g. of a plurality of individual chain links 20, which are connected to one another transversely to the longitudinal direction. It has a movable chain end 23 which is fixed to a driver 24. The EFK 12 also has a fixed chain end 25 which is fixedly flanged to a generally fixed base 26. For example, the cam 24 reciprocates along the horizontal, to the left and to the right in FIG. 1A-1B, relative to the base 26. The cam 24 is e.g. a mobile one

 Connection point in a machine which has to be supplied with energy, data and / or media. The base 26 usually forms the fixed connection point. The driver 24 may alternatively be movable vertically or along two axes. The EFK 12 has a deflection arc 28, which mitfährt according to the driver movement. The deflection bend 28 is e.g. via a deflection roller, or usually defined by angle limiting stops of the chain links 20.

The monitoring system 10 monitors whether a failure of the EFK 12 or breakage 13 occurs. When the detector 16 detects such a break 13, it detects the

Evaluation unit 14 and signals this further to a higher level (not shown), such as a Machine control or an automation system of known type. Upon detection of a break 13 an emergency stop of the driver 24 is triggered. Thus, the EFK 12 can be repaired at the break even before damage to the line (s) arises.

An essential aspect of the invention lies in

Detection principle, by means of which a break 13 is detected by the detector 16. This is achieved according to the invention by at least one triggering cord 30, which is operatively connected to the detector 16 and extends over part or all of the length of the EFK 12 for this purpose.

In the embodiment shown in FIG. 4A to FIG. 5, the triggering cord 30 acts mechanically with the detector 16

together . On each side of the EFK 12 of FIG.IA to FIG.5 is a zugseilartige triggering cord 30 by means of eyelets 32, the FIG.4 shows in more detail, performed in the EFK 12. The eyelets 32 are designed to guide as exactly as possible at the level of the neutral fiber of the EFK 12. Eyelets 32 are at regular intervals, as shown in FIG. at each chain link 20, or at shorter links, e.g. provided on every second or third chain link 20. The tripping cord 30 is on

Cord end, which is on the side of the base 26, set by a tension spring 34 under tension. This end of the cord is attached to a movable part of the detector 16 (see FIG.5), which is acted upon by the tension spring 34. The other end of the string 30 is fixedly attached to the end of the monitored longitudinal area. In FIG.1A- FIG.5 the triggering cord is attached to the movable chain end 23 and / or the driver 24. Accordingly

the release cord 30 extends over the entire length of the EFK 12 and thus can detect a fracture 13 at each position of the EFK 12. The tripping cord 30 should at least over a length corresponding to the critical one

 Range of movement, in particular the deflection bend 28 rich.

In the event of breakage 13, a larger distance between two eyelets 32 is created at the breakage point by divergence of the break ends of the EFK 12. This results in a displacement of the defined guided release cord 30 from one

predefined nominal position or its normal course out. As a result, the tripping cord 30 can be subjected to a kinematic change in position or speed or acceleration on the biased end of the ratchet

determine. The detection takes place in the detector 16 after

FIG. 1A-5 by a transducer 36 associated with the triggering cord 30, e.g. a linear displacement sensor. The tripping cord 30 thus acts as a traction cable on the force transmitting

corresponding pickup 36. A tearing off the

 Trigger cord 30 is of course detectable, but not

required.

In a preferred embodiment, two tripping cords 30 are provided, one to each side of the EFCF 12. The detector 16 accordingly comprises two transducers 36.

 Basically, however, is an execution with only one

Tripping cord 30, e.g. centrally through the cross section of the EFK 12, only a corresponding transducer 36 is sufficient.

FIG. 2A shows a profile of the output signal S of a

Pickup 36 which is in normal operation e.g. a periodic reciprocation of the driver 24th

equivalent. There are only low amount, temporal slow fluctuations. FIG. 2B, on the other hand, shows erratic signal peaks, which, in the event of a break 13, occur in the EFK 12, since the triggering cord 30 transmits a shock-like movement to the transducer 36. Such a signal tip arises, for example, at the time of break itself, but also, for example, when the break point by the Umlenkbogen 28 is moved.

Signal peaks in the output signal S, as in FIG. 2B, can be detected by signal processing known per se, e.g. one

One-channel analyzer or window discriminator, be processed in the detector 16 to reliably breakage 13 to

capture and insignificant fluctuations

differ. The detector 16 outputs a corresponding one

Signaling signal to the evaluation unit 14 on. The signal processing of the output signal S of the pickup 36 can also largely take place in the evaluation unit 14 itself. The evaluation unit 14 detects in both cases that a break has been detected and outputs a corresponding output signal to the higher level.

Since damage to guided lines usually only arises when, despite a break 13, the operation of the EFK 12 has continued for a certain duration, the detection of an actual break avoids unnecessary false triggering. There may also be an additional tolerance e.g. with corresponding

Counters are provided in the evaluation unit 14 to trigger the accident only after a few signal peaks or after evaluation of both transducers 36.

Instead of actually measuring the kinematic parameter, here the distance (or e.g., velocity and / or acceleration) through the transducer 36, only a threshold exceeding of the kinematic parameter of the triggering cord 30 may be detected and, e.g. when

Output level change, to the evaluation unit 14th

be passed on. This can e.g. be achieved simply by means of a switch rocker or a toggle switch (not shown) as a transducer, with which the triggering cord, for. like a tripwire (Engl, "tripwire")

interacts. FIG.3-4 show in a longitudinal section of the EFK 12 am

Umlenkbogen 28 an exemplary, typical structure of the chain links 20. The chain links 20 are here composed of four main components: two

opposite side tabs 21 and two transverse webs 22, which hold the side plates 21 parallel. These

Items 21, 22 are e.g. made of plastic

Injection molding process. Each side flap 21 has in each case at one longitudinal end a bearing journal and on

opposite longitudinal end of a corresponding receptacle. A pair of pins and receptacle forms a pivotable perpendicular to the longitudinal direction hinge connection between longitudinally adjacent side plates 21. In the EFK 12 according to FIG.3-4, the pivot axis of the articulated connection is located in

Cross section each about halfway between the

 Narrow sides of the side flaps 21. Correspondingly, here, with respect to the cross section of the EFK 12, results in an approximately central position of the neutral fiber. The concatenation of

Side tabs 21 gives one on each side

Strap strand.

With the stretched EFK 12, the biased release cord 30 is positioned as close as possible to the neutral fiber, i. at the height of the pivot axes as shown on the left in FIG.4. Accordingly, the eyelets 32 are arranged so that the implementation of the triggering cord 30 is at this level. In the example of FIG.3-4, the eyelets 32 as a separate

Attachments e.g. manufactured by injection molding and fixed by means of a latching connection to dividers 29 inside of the EFK 12. The separating webs 29 are, as separate parts of known construction, fastened by means of a latching connection on both transverse webs 22, in particular in longitudinal and

Height direction and possibly secured in the transverse direction to the EFK 12. Alternatively, the eyelets 32 also directly in the preparation according to the partitions 29th be integrated. Not shown in detail is a lateral Einfädelöffnung each eyelet 32 to bring the triggering cord 30 slightly laterally. As an alternative to the example shown, eyelets, for example, could also be used laterally on the outside

Side tabs 21 may be provided.

The eyelets 32 lead in mechanical action the

Release cord 30 freely movable in the longitudinal direction and

low wear, but at the predefined height by the EFC 12. When broken in the EFK 12, e.g. in the strand of the side flaps 21 of a page, necessarily creates a relative movement of the triggering cord 30, since the distance between adjacent eyelets 32 increases.

In the EFK 12 of FIG.3-4, the limitation of

Bending between two chain links 20 set by stops so that the deflection bend 28 always comprises at least three chain links 20. When an eyelet 32 is arranged on each chain link, the distance therebetween, based on the section length of the EFK 12, is over 180 ° radians of the

Deflection arc 28, less than a third (^ 33%) of this section length. This results in the deflection bend 28 a good

Approximation of the course of the triggering cord 30 to the position of the neutral fiber.

According to FIG.3-4, the eyelets 32 are also executed in a sliding guide, with an extension in the longitudinal direction, and with sufficient transverse play for free rope or line guide. The eyelets 32 have at both longitudinal ends orifices 33, which in the longitudinal direction curved or open rounded. The degree of curvature or radius of the orifices 33 is selected in FIG. 4 in such a way that even with maximum bending of adjacent chain links 20, an edge-free, low-wear

Implementation of the tripping cord 30 is given. Preferably, the material of the triggering cord 30 is selected so that possibly the eyelets 32 and not the triggering cord 30 wear out. Suitable is, for example, a brake cable made of steel wires or a pull rope made of plastic fibers. In the case of a mechanical action principle, the triggering cord 30 used is a low-stretch rope, eg of Dyneema® fibers, with a technical elongation <1% at work load. FIGS. 3-4 show a triggering cord 30 along an outer side, here close to the side flaps 21 (at the top in FIG. 3). On the opposite outside (bottom in

FIG. 3), the EFK 12 is preferably provided with a second one

Tripping cord 30 and with corresponding eyelets 32 on

Equipped identical way.

FIG. 5 shows purely by way of example a suitable sensor 36 for the detector 16. This sensor 36 is designed as a linear displacement sensor. It comprises a carriage 50, which is movably guided on a stationary guide rail 52 along an axis in the longitudinal direction of the EFK 12. The

 Guide rail 52 is attached to the base 26. On one side of the carriage 50, the movable cord end of the triggering cord 30 is attached. On the other side, the tension spring 34 is attached. By the at the base 26

biased tension spring 34, the tripping cord 30 is biased. The carriage 50 should be approximately midway between end stops of the guide rail 52 in the idle state. The pickup 36 detects the movement of a position sensor 54 provided on the movable carriage 50, e.g. one

Incremental encoder. Upon relative movement of the triggering cord 30 in relation to the actual EFK 12, movement is transmitted to the carriage 50 and thus the position transmitter 54. A movement of the position sensor 54 is output as output signal S (see FIG.2A-2B) from the transducer 36 and from

Detector 16 or possibly processed by the evaluation unit 14 to detect the occurrence of a break 13.

Energy supply chain and monitoring system for protection against

 line break

 LIST OF REFERENCE NUMBERS

10 monitoring system

 12 Energy Chain (short: SFA)

 13 break

 14 evaluation unit

16 detector

 20 chain link

 21 side flap

 22 crossbar

 23 movable chain end

 24 drivers

 25 fixed chain end

 26 base

 28 deflection bend

 29 divider

 30 triggering cord

 32 eyelet

 33 estuary

 34 tension spring

36 transducers

50 sleds

 52 guide rail

54 position transmitter

Claims

claims

1 . Energy guiding chain (12) for protection against

 A line breaker comprising: a plurality of interconnected links (20) or segments for guiding one or more lines, such as cables, hoses or the like. between a base (26) and a relative to the base movable carrier (24), wherein the members or segments for forming a deflection arc (28)

 are angled against each other; and a detector, which for monitoring the energy supply chain

 is provided; characterized in that the detector (16) is provided with a low - strain tripping cord (30) for detecting a rupture in the

 Energy chain is operatively connected and one

 Transducer (36) for detecting a kinematic

 Parameter, the triggering cord (30)

 mechanically interacts with the transducer (36) and is guided by the power transmission chain.

2. Energy guiding chain according to claim 1, characterized in that the detector (16) comprises a sensor (36) for distance, speed and / or acceleration detection, and in that the triggering cord (30) interacts with the sensor (36) in a pull-rope manner.

3. Energy guiding chain according to claim 2, characterized

 characterized in that on or in the

 Energy guide chain (12) eyelets (32) are provided, through which the triggering cord (30) is guided freely movable in the longitudinal direction, wherein a relative movement of the triggering cord in a break in the

 Energy supply chain is detected by the detector.

4. Energy guiding chain according to claim 3, characterized

 characterized in that the triggering cord (30) is mounted under prestress.

5. Energy guiding chain according to one of claims 3 to 4, in particular according to claim 3, characterized

 characterized in that the eyelets (32) in

 are provided at regular intervals, which ^ 50%, preferably ^ 33%, the over 180 ° radians of the

 Deflection arc extending length of the

 Energy supply chain amount.

6. Energy guiding chain according to one of claims 3 to 5, in particular according to claim 5, characterized

 characterized in that the eyelets (32) are provided on each member or segment (20).

7. Energy guiding chain according to one of claims 3 to 5, in particular according to claim 5, characterized

characterized in that the eyelets extending in the manner of a guide in the longitudinal direction and executed with transverse play are and on both sides of mouths (33) which open curved or rounded in the longitudinal direction, wherein the degree of curvature preferably to the maximum

 Angulation of the links (20) or segments is adjusted.

8. Energy guiding chain according to one of claims 3 to 7, in particular according to claim 7, characterized

 characterized in that the eyelets (32) as

 Component in separate dividers (29) are integrated or as separate attachments, especially as

 Injection molded parts, for attachment to dividers or on side flaps (21) are executed.

9. Energy guiding chain according to one of claims 3 to 7, in particular according to claim 7, characterized

 in that the eyelets are integrated in side tabs (21) of the energy guiding chain.

10. Energy guiding chain according to one of claims 1 to 9, characterized in that the

 Energy supply chain (12) is equipped with a strain relief.

11. Energy guiding chain according to one of claims 1 to 10, in particular according to claim 2, characterized

 in that the triggering cord (30) is made as a cable or as a single fiber, in particular of steel wire or of engineering plastic, wherein the triggering cord is preferably selected such that it has an elongation <3%, particularly preferably <1, at work load % having.

12. Energy guiding chain according to one of claims 1 to 10, in particular according to claim 1, characterized characterized in that the release cord of the power transmission chain at least over a length

 is guided in accordance with the range of movement of the deflection arc (28) and / or at the level of their neutral fiber.

13. Energy guiding chain according to claim 12, characterized

 in that the tripping cord is guided by the energy guiding chain at regular intervals.

14. Energy guiding chain according to one of claims 1 to 13, characterized in that each member has two outer side flaps (21) or parts, which articulated with adjacent

 Side tabs or parts are connected, wherein a first triggering cord (30) is provided along an outer side and a second triggering cord (30) is provided along the opposite outer side, and preferably for each side separately a corresponding transducer (36) with the respective

 Triggering cord (30) is connected.

15. Energy guiding chain according to one of claims 1 to 14, in particular according to claim 1, characterized

 characterized in that the tripping cord has a total length substantially equal to the length of the energy guiding chain and less than 1.5 times the length of the energy guiding chain.

16. Monitoring system (10) for protecting a

 Energy supply chain against a line break, comprising an evaluation unit (14) which is connected to a arranged on the energy chain detector, characterized by a

Energy guiding chain (12) according to one of claims 1 to 15, wherein the detector (16) connected to the triggering cord (30) is connected to the evaluation unit and the evaluation unit (14) evaluates signals detected by the detector with regard to a possible break in the energy guiding chain.

17. Monitoring system according to claim 16, wherein the

 Evaluation unit (14) triggers an emergency stop of the driver when a break in the energy supply chain has been detected via the tripping cord (30).

18. Monitoring system according to claim 16 or 17, wherein the evaluation unit (14) detects a break when a signal (S) generated by the detector (16) is outside a tolerance field.

19. separating web (29) for an energy guiding chain (12) according to one of claims 1 to 15, characterized

 in that the separating web (29) comprises an eyelet (32) for a triggering cord (30) extending in the longitudinal direction of the energy guiding chain, wherein the eyelet (32) is produced as a separate attachment and attached to the eyelet (32)

 Divider is attached, or in the divider

 is integrated.

20. The use of a detector (16) and a low-strain release cord (30) for detecting a break in an energy guide chain (12), wherein the triggering cord (30) mechanically operatively connected to the detector (16), and the detector has a break in the energy chain Basis of a change of a kinematic

Parameters of the tripping string (30) detected.

21. Energy chain (12) for protection against a

 A line breaker comprising: a plurality of interconnected links (20) or segments for guiding one or more lines, such as cables, hoses or the like. between a base (26) and a relative to

Base movable driver (24), wherein the members or segments for forming a deflection arc (28)

 are angled against each other; and a detector, which for monitoring the energy supply chain

 is provided; characterized in that

 the detector (16) with a low - strain tripping cord (30) for detecting a break in the

 Energy chain is operatively connected, the

 Triggering cord is guided by the energy chain.